5666624641 has 4 divisors (see below), whose sum is σ = 5667680772. Its totient is φ = 5665568512.

The previous prime is 5666624627. The next prime is 5666624681. The reversal of 5666624641 is 1464266665.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3614534641 + 2052090000 = 60121^2 + 45300^2 .

It is a cyclic number.

It is not a de Polignac number, because 5666624641 - 2⁹ = 5666624129 is a prime.

It is a super-2 number, since 2×5666624641² = 64221269643976757762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5666624591 and 5666624600.

It is not an unprimeable number, because it can be changed into a prime (5666624681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 519976 + ... + 530761.

It is an arithmetic number, because the mean of its divisors is an integer number (1416920193).

Almost surely, 2^5666624641 is an apocalyptic number.

It is an amenable number.

5666624641 is a deficient number, since it is larger than the sum of its proper divisors (1056131).

5666624641 is a wasteful number, since it uses less digits than its factorization.

5666624641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056130.

The product of its digits is 1244160, while the sum is 46.

The square root of 5666624641 is about 75276.9861312207. The cubic root of 5666624641 is about 1782.8226730789.

The spelling of 5666624641 in words is "five billion, six hundred sixty-six million, six hundred twenty-four thousand, six hundred forty-one".